Biology
Photosynthesis in Plants
1,508 Questions
Photosynthesis is the biological process by which plants convert light energy into chemical energy. This page contains practice questions covering essential topics like chlorophyll, light reactions, and the pathways specific to plants. This material is crucial for medical entrance exams and academic assessments.
Chlorophyll and pigmentsLight reactionsCalvin cycleCAM plantsElectron transportPhotosynthesis factors
Photosynthesis in Plants Questions
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ribosomes
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plastids
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cell wall
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chloroplasts
D
Correct answer
Explanation
Chloroplasts work to convert the light energy of the Sun into the sugars that can be used by cells.
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oxygen; carbon dioxide
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oxygen; oxygen
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carbon dioxide; carbon dioxide
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oxygen; nitrogen
B
Correct answer
Explanation
Plants produce oxygen during photosynthesis and utilise oxygen during respiration. They produce much more oxygen during photosynthesis than they consume during respiration.
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Escherichia coli
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Cyanobacteria
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Sulphur bacteria
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Green bacteria
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Purple bacteria
B
Correct answer
Explanation
They use sunlight as an energy source and convert into biomolecules.
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Ferridoxin
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Phytochrome
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Cytochrome
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Cristochrome
C
Correct answer
Explanation
Cytochrome acts as an electron carrier in both photosynthesis and respiration.
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On the surface of chloroplast
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Dispersed throughout chloroplast
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In the stroma of chloroplast
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In the grana of chloroplast
D
Correct answer
Explanation
Chlorophyll is present in the grana of chloroplast. It is the main pigment in green plantsrequired for photosynthesis.
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stacks of thylakoids in plastids
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byproduct of photosynthesis
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site of respiration in plants
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site of nitrogen fixation in plants
A
Correct answer
Explanation
Grana refers to stacks of thylakoids in plastids.They are the site of the light-dependent reactions of photosynthesis.
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it can occur in dark
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it does not require direct light
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it cannot occur during daytime
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it occurs more rapidly at night
B
Correct answer
Explanation
Dark reaction in photosynthesis is called so because it does not require direct light for the reaction to occur. This reaction occurs in the stroma, the fluid-filled area of a chloroplast outside of the thylakoid membranes.
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Alga
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Virus
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Fungi
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All of the above
A
Correct answer
Explanation
Alga are photosynthetic and can produce their own food.
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Warburg effect
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Pasteur effect
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Emerson effect
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Richmond-Lang effect
A
Correct answer
Explanation
The inhibitory effect of oxygen on the rate of photosynthesis is called as Warburg effect.
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phosphoglyceric acid
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ribulose 1, 5- biphosphate
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oxalo-acetic acid
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phosphoenol pyruvic acid
D
Correct answer
Explanation
In CAM plants, the initial carbon dioxide acceptor is phosphoenol pyruvic acid.
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grana lamellae of chloroplast
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stroma of chloroplast
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thylakoids of chloroplast
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stromas lamellae of chloroplast
B
Correct answer
Explanation
The dark reaction of photosynthesis occurs in stroma of chloroplast.
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C3 plants
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Halophytes
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C4 plants
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CAM plants
C
Correct answer
Explanation
Agranal chloroplast is found in C4 plants.
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mitochondria
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peroxisome
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nucleus
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chloroplast
A
Correct answer
Explanation
The glycine diffuses into a mitochondrion, where two glycine molecules are converted to glycerate (a three-carbon molecule) and CO2.
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intensity of light
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temperature
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duration of light
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quality of light
C
Correct answer
Explanation
The rate of photosynthesis in plants is independent of duration of light.
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Photosynthesis
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Respiration
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Transpiration
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Chemosynthesis
A
Correct answer
Explanation
All green plants prepare their food using inorganic raw materials. The process is known as photosynthesis. Respiration is the process of release of energy with inhalation of oxygen and exhaling of carbon dioxide. Transpiration refers to the loss of water through stomata by leaves. Chemosynthesis refers to formation of organic substances from CO2 or methane.